Buggy code:
public class BcelTypeMunger extends ConcreteTypeMunger { public BcelTypeMunger ( ResolvedTypeMunger munger , ResolvedTypeX aspectType ) { } public String toString ( ) { } public boolean munge ( BcelClassWeaver weaver ) { } private String getShortname ( String path ) { } private boolean mungeNewParent ( BcelClassWeaver weaver , NewParentTypeMunger munger ) { } private boolean enforceDecpRule1_abstractMethodsImplemented ( BcelClassWeaver weaver , ISourceLocation mungerLoc , LazyClassGen newParentTarget , ResolvedTypeX newParent ) { boolean ruleCheckingSucceeded = true ; if ( ! ( ( newParentTarget . isAbstract ( ) ) || ( newParentTarget . isInterface ( ) ) ) ) { List methods = newParent . getMethodsWithoutIterator ( ) ; for ( Iterator i = methods . iterator ( ) ; i . hasNext ( ) ; ) { BcelMethod o = ( ( BcelMethod ) ( i . next ( ) ) ) ; if ( ( o . isAbstract ( ) ) && ( ! ( o . getName ( ) . startsWith ( "ajc$interField" ) ) ) ) { BcelMethod discoveredImpl = null ; List newParentTargetMethods = newParentTarget . getType ( ) . getMethodsWithoutIterator ( ) ; for ( Iterator ii = newParentTargetMethods . iterator ( ) ; ( ii . hasNext ( ) ) && ( discoveredImpl == null ) ; ) { BcelMethod gen2 = ( ( BcelMethod ) ( ii . next ( ) ) ) ; if ( ( ( gen2 . getName ( ) . equals ( o . getName ( ) ) ) && ( gen2 . getParameterSignature ( ) . equals ( o . getParameterSignature ( ) ) ) ) && ( ! ( gen2 . isAbstract ( ) ) ) ) { discoveredImpl = gen2 ; } } if ( discoveredImpl == null ) { boolean satisfiedByITD = false ; for ( Iterator ii = newParentTarget . getType ( ) . getInterTypeMungersIncludingSupers ( ) . iterator ( ) ; ii . hasNext ( ) ; ) { ConcreteTypeMunger m = ( ( ConcreteTypeMunger ) ( ii . next ( ) ) ) ; if ( ( m . getMunger ( ) ) instanceof NewMethodTypeMunger ) { ResolvedMember sig = m . getSignature ( ) ; if ( ! ( Modifier . isAbstract ( sig . getModifiers ( ) ) ) ) { if ( ResolvedTypeX . matches ( AjcMemberMaker . interMethod ( sig , m . getAspectType ( ) , sig . getDeclaringType ( ) . isInterface ( weaver . getWorld ( ) ) ) , o ) ) { satisfiedByITD = true ; } } } } if ( ! satisfiedByITD ) { <START_BUG> error ( weaver , ( ( ( ( "Class<seq2seq4repair_space>must<seq2seq4repair_space>implement<seq2seq4repair_space>the<seq2seq4repair_space>inherited<seq2seq4repair_space>abstract<seq2seq4repair_space>method<seq2seq4repair_space>" + ( o . getDeclaringType ( ) ) ) + "." ) + ( o . getName ( ) ) ) + ( o . getParameterSignature ( ) ) ) , newParentTarget . getType ( ) . getSourceLocation ( ) , new ISourceLocation [ ] { o . getSourceLocation ( ) , mungerLoc } ) ; <END_BUG> ruleCheckingSucceeded = false ; } } } } } return ruleCheckingSucceeded ; } private boolean enforceDecpRule2_cantExtendFinalClass ( BcelClassWeaver weaver , ISourceLocation mungerLoc , LazyClassGen newParentTarget , ResolvedTypeX newParent ) { } private boolean enforceDecpRule3_visibilityChanges ( BcelClassWeaver weaver , ResolvedTypeX newParent , BcelMethod superMethod , LazyMethodGen subMethod ) { } private boolean enforceDecpRule4_compatibleReturnTypes ( BcelClassWeaver weaver , BcelMethod superMethod , LazyMethodGen subMethod ) { } private boolean enforceDecpRule5_cantChangeFromStaticToNonstatic ( BcelClassWeaver weaver , ISourceLocation mungerLoc , BcelMethod superMethod , LazyMethodGen subMethod ) { } public void error ( BcelClassWeaver weaver , String text , ISourceLocation primaryLoc , ISourceLocation [ ] extraLocs ) { } private LazyMethodGen findMatchingMethod ( LazyClassGen newParentTarget , BcelMethod m ) { } public boolean attemptToModifySuperCalls ( BcelClassWeaver weaver , LazyClassGen newParentTarget , ResolvedTypeX newParent ) { } private String createReadableCtorSig ( ResolvedTypeX newParent , ConstantPoolGen cpg , INVOKESPECIAL invokeSpecial ) { } private ResolvedMember getConstructorWithSignature ( ResolvedTypeX tx , String signature ) { } private boolean mungePrivilegedAccess ( BcelClassWeaver weaver , PrivilegedAccessMunger munger ) { } private void addFieldGetter ( LazyClassGen gen , ResolvedMember field , ResolvedMember accessMethod ) { } private void addFieldSetter ( LazyClassGen gen , ResolvedMember field , ResolvedMember accessMethod ) { } private void addMethodDispatch ( LazyClassGen gen , ResolvedMember method , ResolvedMember accessMethod ) { } private LazyMethodGen makeMethodGen ( LazyClassGen gen , ResolvedMember member ) { } private FieldGen makeFieldGen ( LazyClassGen gen , ResolvedMember member ) { } private boolean mungePerObjectInterface ( BcelClassWeaver weaver , PerObjectInterfaceTypeMunger munger ) { } private boolean couldMatch ( BcelObjectType bcelObjectType , Pointcut pointcut ) { } private boolean mungeNewMethod ( BcelClassWeaver weaver , NewMethodTypeMunger munger ) { } private void addNeededSuperCallMethods ( BcelClassWeaver weaver , ResolvedTypeX onType , Set neededSuperCalls ) { } private void signalError ( String msgid , BcelClassWeaver weaver , TypeX onType ) { } private boolean mungeNewConstructor ( BcelClassWeaver weaver , NewConstructorTypeMunger newConstructorTypeMunger ) { } private static LazyMethodGen makeDispatcher ( LazyClassGen onGen , String dispatchName , ResolvedMember superMethod , BcelWorld world , boolean isSuper ) { } private boolean mungeNewField ( BcelClassWeaver weaver , NewFieldTypeMunger munger ) { } }

Fix:
error ( weaver , ( ( ( ( ( ( "The<seq2seq4repair_space>type<seq2seq4repair_space>" + ( newParentTarget . getName ( ) ) ) + "<seq2seq4repair_space>must<seq2seq4repair_space>implement<seq2seq4repair_space>the<seq2seq4repair_space>inherited<seq2seq4repair_space>abstract<seq2seq4repair_space>method<seq2seq4repair_space>" ) + ( o . getDeclaringType ( ) ) ) + "." ) + ( o . getName ( ) ) ) + ( o . getParameterSignature ( ) ) ) , newParentTarget . getType ( ) . getSourceLocation ( ) , new ISourceLocation [ ] { o . getSourceLocation ( ) , mungerLoc } ) ;